SYNOPSIS
Wendover took the sketch and examined it with a doubtful expression on his face. 'I think you've got it upside down,' suggested Sir Clinton ... 'If you turn it the other way up I believe the north will be at the top/ Wendover reversed the map, but seemed little the wiser.
'What does C.C. mean?' he demanded. My impression is that C.C. stands for Caesar's Camp and the thing is a rough plan of the ground around about the place which we visited to-night.
The black circle represents the bomb-crater, you see the position of the camp and that little rectangle is meant for Pirbright's shack or his garden — the place where there has been a mysterious crime ..."